assertEquals( "-9223372036854775808", service.convert( Long.valueOf( -9223372036854775808L ), String.class ) );
assertEquals( "-2147483648", service.convert( Long.valueOf( -2147483648L ), String.class ) );
assertEquals( "-32768", service.convert( Long.valueOf( -32768L ), String.class ) );
assertEquals( "-128", service.convert( Long.valueOf( -128L ), String.class ) );
assertEquals( "-48", service.convert( Long.valueOf( -48L ), String.class ) );
assertEquals( "0", service.convert( Long.valueOf( 0L ), String.class ) );
assertEquals( "47", service.convert( Long.valueOf( 47L ), String.class ) );
assertEquals( "127", service.convert( Long.valueOf( 127L ), String.class ) );
assertEquals( "32767", service.convert( Long.valueOf( 32767L ), String.class ) );
assertEquals( "2147483647", service.convert( Long.valueOf( 2147483647L ), String.class ) );
assertEquals( "9223372036854775807", service.convert( Long.valueOf( 9223372036854775807L ), String.class ) );